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Watermelon, raw

Per 100 g edible portion
Fruits
Kidney-friendlyFrom a daily-limit view, Watermelon lands in the Kidney-friendly band: Potassium is highest at 6%, still comfortably low.

Phosphorus / Sodium / Potassium (rating basis)

Phosphorus11 mg1%
Low
Sodium1 mg<1%
Low
Potassium112 mg6%
Low

About this food

For Fruits, Watermelon is a typical example. Potassium levels vary widely across fruits - apples and berries are low-potassium, kidney-friendly picks, while bananas and avocados are high and need portion control. The natural sugar in fruit is usually not the issue; potassium is.

Nutrient insight

The most striking number here is potassium (6%). For patients on potassium restriction, portion size and leaching are the two levers that matter for foods like Watermelon.

Other nutrients

Protein0.6 gNot part of rating
Fiber0.4 gBeneficial for CKD (core plant-based nutrient)
Sugar (total)6.2 gNatural sugar
Alcohol0 gAlcohol-free
PurineNo dataNot rated · reference for those with high uric acid
Oxalate3 mgLow oxalateNot rated · category estimate
Phosphorus source: Natural plant source (lower absorption) · Potassium form: Whole food

Practical tips

A handy approach - For high-potassium fruits, portion control is the main lever - for example, half a banana instead of a whole one.

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Related guides

FruitsKidney-friendly foodsHigh fiber foodsLow sodium foods

Frequently asked questions

Is Watermelon safe for kidney disease?

By our rating standard (CKD stage 3-4), Watermelon is Kidney-friendly. Main consideration: Potassium at 6% of the daily limit. Data is for reference; consult your care team.

Why is Watermelon rated Kidney-friendly?

Watermelon is rated Kidney-friendly because Potassium is 6% of its limit (112 mg) - the only mineral reaching the <15% range.

How much Potassium is in Watermelon?

Data: 100 g of Watermelon has Potassium 112 mg (6% of the 2,000 mg limit).

Is Watermelon safe on a low-potassium diet?

Low-potassium question: Watermelon falls below the 300 mg threshold (Potassium 112 mg per 100 g). Whether it fits depends on your daily potassium budget.

How does Watermelon compare to other fruits foods?

Next to other Fruits options, Watermelon carries less Potassium at 112 mg per 100 g. Use your own daily limits, not category labels, as the guide.